Idiom-(be crunch time/step up one's game)
1. be crunch time
- the rush time before a deadline
Eg. Our big project is due in three days, this is crunch time! we must complete it.
2. step up one's game
- must perform or act better in order to achieve success
Eg. Unfortunately, Stephen Curry didn't step up his game so the Raptors won the NBA.